Common Tern

It is strongly migratory, wintering in coastal tropical and subtropical regions. Breeding adults have light grey upperparts, white to very light grey underparts, a black cap, orange-red legs and a narrow pointed bill, mostly red with a black tip or all black depending on the subspecies. The similar Arctic tern is separated by plumage, leg and bill colour and voice (Wikipedia, general species account). It nests on any flat, poorly vegetated surface near water and readily uses artificial rafts. (Wikipedia, general species account).

Common Tern is a seabird with a circumpolar distribution, breeding in temperate and subarctic Europe, Asia and North America. The nest may be a bare scrape, and up to three camouflaged eggs are laid and incubated by both sexes for about 21 to 22 days. This bird has a circumpolar distribution, its four subspecies breeding in temperate and subarctic regions of Europe, Asia and North America. Breeding in a wider range of habitats than any of its relatives, the common tern nests on any flat, poorly vegetated surface close to water, including beaches and islands, and it readily adapts to artificial substrates such as floating rafts. (Wikipedia, general species account).